Motor Plants & Auxiliary Boilers USCG Question #1483 (Set 31)

The device shown in the illustration is a __________. Illustration MO-0008

USCG Exam Illustration MO-0008
USCG Examination Diagram: Illustration MO-0008
Official USCG Answer & Rule Citation

Correct Answer: Option C — comparator type mist detector for large low-speed, crosshead type engines

Large slow-speed crosshead diesel crankcases employ comparator-type oil mist detectors to continuously sample atmosphere density and opacity against reference chambers, detecting incipient bearing overheating early.

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